复合材料泡沫夹层结构的缺陷评定方法研究  

Research on the Evaluation Method of Defects for Composite Foam Sandwiches

作　　者：唐桂云[1] 王云飞[1] 于柏峰[1] 

机构地区：[1]哈尔滨玻璃钢研究院,哈尔滨150036

出　　处：《纤维复合材料》2011年第2期30-32,共3页Fiber Composites

摘　　要：本文以厚壁碳纤维复合材料为面板,硬质聚氨酯泡沫为芯材制造复合材料泡沫夹层结构,模拟实际生产过程中容易出现的面板与芯材之间界面的脱粘和界面胶层过厚的现象,采用人工制造试块的方法,研究了超声波探伤对夹层复合材料缺陷的评定方法,解决了实际检测过程中的疑问,为夹层复合材料结构产品的质量检验提供依据。得出了粘接良好区胶层过厚不会被判定为脱粘的结论。The potential debond and the thicker interfacial bonding layer between the panel and the core during the practical processing were simulated for the foam sandwich structures with thick carbon fiber panels and rigid polyurethane foam core. Using the man - made defect method, the evaluating method of sandwich composite defects was researched with ultrasonic testing, which solved the problems in the practical testing process and provided the evidence for the quality tes- ting of sandwich composite structures. The conclusions were got that the thicker bonding layers in the better adhesive area will not be considered as the debondinz.

关 键 词：复合材料 泡沫夹层结构 声阻抗 脱粘 超声波探伤 

分 类 号：TB332[一般工业技术—材料科学与工程]